Connected: An Internet Encyclopedia
RFC 959 - 5.1. MINIMUM IMPLEMENTATION

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### 5.1. MINIMUM IMPLEMENTATION

In order to make FTP workable without needless error messages, the following minimum implementation is required for all servers:

             TYPE - ASCII Non-print
             MODE - Stream
             STRUCTURE - File, Record
             COMMANDS - USER, QUIT, PORT,
                        TYPE, MODE, STRU,
                          for the default values
                        RETR, STOR,
                        NOOP.

The default values for transfer parameters are:

             TYPE - ASCII Non-print
             MODE - Stream
             STRU - File

All hosts must accept the above as the standard defaults.

Next: 5.2. CONNECTIONS

Connected: An Internet Encyclopedia
RFC 959 - 5.1. MINIMUM IMPLEMENTATION